Fastener for ink ribbons



April 21, 1925. A 1,534,755

n H. ABBOTT FASTENER FOR INK RIBBONS Filed June 22, 1922 vwmatoz Patented Apr. 21, 1925.

UNITED STATES HENRY ABBOTT, OF EAST ORANGE, NEWjJERSEY, ASSIGNOR T0 THE OALCULAGRAPH 1,534,155 PATENT OFFICE.

COMPANY, A CORPORATION OF NEW JERSEY.

FASTENER FOR INK RIBBONS.

Application led J'une 22,

To all 107mm, t may concer/n.:

Be it known that I, HENRY' Anno'r'r,

citizen ot' the United States, a resident .,if East Orange, in the county of Essex .and State ofNew Jersey, vhave invented a certain new and useful Improved Fastener for Ink Ribbons, of which the following is specification.

The object` of my invention has been to provide ay fastener for inkribbons for use on time printing, typewriting and other machines, in which ink ribbons are used, which shall have, among other advantages, those ofbeing efficient inoperation, simple in application, and low cost of manufacture, and to such ends my invention consists in the astener for ink ribbons hereinafter speci- In the accompanying drawings- Figure 1 is a perspective view of'a ribbon fastener embodying my invention;

Fig. 2 is a similar view of a spool or spindle adapted to have such-fastener applied thereto;

Fig. 3 is' an end elevation of the said fastener applied to the said spindle `and having a ribbon attached thereto. A

In the fastening of an ink ribbon to a spool or spindle in printing machines using` such ribbons, there are several important or desirable considerations: the should be easily applied to the spool, and this is not a simple matter, as the spool is usually in a more or less inaccessible position vthe fastener should be one which will hold the ribbon securely, whether it be apfpled to the spool or fastened to the ribbon,

i so that it faces either toward or away from the body of the ribbon; the fastener should also be readily so applied to the ribbon that it will cause the ribbon to wind truly on the spool and not obliquely.. The .fastener should also be such that the roll or winding of ribbon will be of as uniform diameter as possible, especially where the cha-nge in size of the roll is to be used to control oroperate fastening 1922. Serial No. 570,276.

invention is capable of embodiment in various forms, and the one chosen for illustration is, therefore, to be taken only as typical and my invention is not to be limited thereto.

The fastener shown in the accompanying drawings, comprises a body 1which, in the present instance, is in the form of a strip `of sheet metal, having a clip or clips 2 formed on or att-ached thereto, so that the fastener may be sprung on to a spool or spindle 3 about which the ribbon is to be wound. The said body is provided with a ,flange or other form of shoulder 4 which is adapted to engage some form of shoulder on the spool, such as that formed by a groove 5 cut longitudinally in the spindle. The ink ribbon 6 is fastened to the body 1 in any convenient manner, and preferably by s urs or prongs 7 which are struck up out o the metal forming the said body. The ribbon is impaled upon the spurs and the spurs are bent down u on the ribbon to secure it to the body.- T e spurs or other form of ribbon-fastening means, are located near the flange 4 or other form of shoulder on the fastener for engaging the groove 5 or other form of shoulder on the spindle rather Athan lat a. distance from said flange, such as being such a manner that 1t will not be secure. 9&5

If the ribbon-fastening s urs had been located on the opposite si e of the spool from the flange, as by being formed on the `clips 2, and the fastener were appliedito the spool so that the -pull of the ribbon would 100 be away from the open side of the fastener-- that is, away from. the gap between the ends of the clips and the ange, 'the pull of the ribbon could s ring the clips back over the rounding of t e spool and release 10a the fastener entirely. However, by locating the spurs or other form of ribbon fastening in proximity to the flange or other form oit shoulder, the pull .of the ribbon is applied principally and almost wholly to the flange 11o and hardly at all to the clips, so that the fastener will hold the ribbon, no matter in which of the two possible directions it be wound upon the spool. My clip has very little thickness radially and, therefore, only to a slight extent changes the diameter and contour of the roll of ribbon. This enables the increase or decrease of the diameter of the roll to be eciently used to o erate a device for changing the direction o feed of the ribbon.

Having particularly described my invention, what I claim and desire to secure by Letters Patent is:

1. A ribbon fastener for spools comprising a body having a shoulder that is adapted to co-operate with a shoulder on aspool by amotion perpendicular to the axis of the spool, means for securing said body to the spool, and means relatively close to said shoulder for securing the ribbon to said body and on the same side of said shoulder as' said body.

2. A fastener for ribbons comprising a body having a flange that is adapted to engage a groove in a. spool, means carried by said body that are adapted to be sprung over the convexity of the spool to secure the fastener to the spool, and means adapted to secure a ribbon to the fastener, said last mentioned means being located upon thc l same side of said shoulder as said first mentioned means.

In testimony that I claim the foregoing, I have hereunto set my hand this 13 day of June, 1922.

HENRY ABBOTT. 

